TECHNICAL NOTICE (December 12, 2019) Additions to Source Codes for Vocabularies, Rules, and Schemes Network Development and MARC Standards Office Library of Congress ________________________________ The source codes listed below have been recently approved. The codes will be added to the applicable Source Codes for Vocabularies, Rules, and Schemes<https://www.loc.gov/standards/sourcelist/> lists. See the specific source code lists for current usage in MARC fields and MODS/MADS elements. The codes should not be used in exchange records until 60 days after the date of this notice to provide implementers time to include newly-defined codes in any validation tables. Subject Heading and Term Source Codes The following source codes have been added to the Subject Heading and Term Source Codes<https://www.loc.gov/standards/sourcelist/subject.html> list for usage in appropriate fields and elements. * Additions: * aatnor - Art and architectural thesaurus terms translated into Norwegian (Norway: Directorate for ICT and Joint Services in Higher Education and Research) * cgndb - Canadian Geographical Names Database (Natural Resources Canada) * gpn - Gazetteer of planetary nomenclature * peakbag - Peakbagger.com * tsaij - Tesauro SAIJ de Derecho Argentino (Sistema Argentino de Informaci�n Jur�dica) The Library of Congress, Network Development and MARC Standards Office provides information about existing and newly assigned MARC codes on its Web site (www.loc.gov/marc/<https://www.loc.gov/marc/>) as well as notices such as these to subscribers to its MARC listserv.